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油井产物大多含水，随着油田开采时间的增长，油井产物含水率逐渐增大，在集输管路中形成油气水三相混输。事实上，油气水沿管路共流过程中，特别是经油嘴、阀门等管件时受到剧烈扰动，混输管路的液相大都是原油乳状液。因此，在进行油气水混输管路的压降计算时，以乳状液的物性作为混输管路液相的物性，其中乳状液粘度计算中考虑了温度、剪切速率和含水率３种因素。根据油气水三相混输管路的特点，采用流型模型的研究方法解决油气水三相混输工艺计算问题。
Most of oil well products contain water. With the increase of oilfield exploitation time, the water content of oil products gradually increases, resulting in the formation of oil-gas-water three-phase mixed transportation in the gathering pipeline. In fact, oil and gas water along the pipeline co-flow process, especially by the nozzle, valves and other pipe fittings subjected to severe disturbance, mixed pipeline liquid mostly crude oil emulsion. Therefore, when calculating the pressure drop of oil-gas-water mixed pipeline, taking the physical properties of the emulsion as the physical property of the liquid phase in the mixed pipeline, the viscosity, the temperature, the shear rate and the moisture content are taken into account in the emulsion viscosity calculation . According to the characteristics of oil-gas-water three-phase mixed pipelines, the calculation method of oil-gas-water three-phase mixed transportation is solved by the research method of flow model.